8000 bpo-41428: Documentation for PEP 604 by Fidget-Spinner · Pull Request #22517 · python/cpython · GitHub
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Merged
merged 8 commits into from
Oct 5, 2020
Merged

bpo-41428: Documentation for PEP 604 #22517

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d5e4a77
Add documentation for pep604
Fidget-Spinner Oct 3, 2020
06a16f4
add index for union
Fidget-Spinner Oct 3, 2020
fff1e29
Example to clarify types.Union instantiation
Fidget-Spinner Oct 3, 2020
a2167db
Implement suggestions by gvanrossum and pablosgal
Fidget-Spinner Oct 4, 2020
d983b02
Add reference to generics
Fidget-Spinner Oct 4, 2020
d225dce
PEP12 styling, fix grammar/wording, give full errors
Fidget-Spinner Oct 4, 2020
6ab4717
Apply reviews, add comments to replace link
Fidget-Spinner Oct 5, 2020
a77b261
Update ACKS
Fidget-Spinner Oct 5, 2020
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Add reference to generics
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@Fidget-Spinner
Fidget-Spinner committed Oct 4, 2020
commit d983b027413906dc412463edbcf16a100af11e41
3 changes: 2 additions & 1 deletion Doc/library/stdtypes.rst
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Expand Up @@ -4797,7 +4797,8 @@ enables cleaner type hinting syntax compared to :data:`typing.Union`.
>>> isinstance("", int | str)
True

However, union objects containing parameterized generics cannot be used::
However, union objects containing parameterized :ref:`generics<generics>`
cannot be used::

>>> isinstance(1, int | list[int])
TypeError: isinstance() argument 2 cannot contain a parameterized generic
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